flutter_server_box/lib/data/model/server/system.dart

import 'package:fl_lib/fl_lib.dart';
import 'package:server_box/data/model/app/shell_func.dart';

enum SystemType {
  linux(linuxSign),
  bsd(bsdSign),
  windows(windowsSign);

  final String? value;

  const SystemType([this.value]);

  static const linuxSign = '__linux';
  static const bsdSign = '__bsd';
  static const windowsSign = '__windows';

  /// Used for parsing system types from shell output.
  /// 
  /// This method looks for specific system signatures in the shell output
  /// and returns the corresponding SystemType. If no signature is found,
  /// it defaults to Linux but logs the detection failure for debugging.
  static SystemType parse(String value) {
    // Log the raw value for debugging purposes (truncated to avoid spam)
    final truncatedValue = value.length > 100 
        ? '${value.substring(0, 100)}...' 
        : value;
    
    if (value.contains(windowsSign)) {
      Loggers.app.info('System detected as Windows from signature in: $truncatedValue');
      return SystemType.windows;
    }
    if (value.contains(bsdSign)) {
      Loggers.app.info('System detected as BSD from signature in: $truncatedValue');
      return SystemType.bsd;
    }
    
    // Log when falling back to Linux detection
    if (value.trim().isEmpty) {
      Loggers.app.warning(
        'System detection received empty input, defaulting to Linux. '
        'This may indicate a script execution issue.'
      );
    } else if (!value.contains(linuxSign)) {
      Loggers.app.warning(
        'System detection could not find any known signatures (Windows: $windowsSign, '
        'BSD: $bsdSign, Linux: $linuxSign) in output: "$truncatedValue". '
        'Defaulting to Linux, but this may cause incorrect parsing.'
      );
    } else {
      Loggers.app.info('System detected as Linux from signature in: $truncatedValue');
    }
    
    return SystemType.linux;
  }

  bool isSegmentsLenMatch(int len) => len == segmentsLen;

  int get segmentsLen {
    switch (this) {
      case SystemType.linux:
        return StatusCmdType.values.length;
      case SystemType.bsd:
        return BSDStatusCmdType.values.length;
      case SystemType.windows:
        return WindowsStatusCmdType.values.length;
    }
  }
}